JP2642391B2 - Cableway drive - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cableway drive device that can directly drive a wire rope drive pulley in a cableway system such as a lift or a gondola.

(Prior art) Cableway systems such as lifts and gondolas have wire rope driving pulleys arranged at both ends of the installation section with wheels laid sideways, and an endless wire rope is passed between these pulleys and the wire The rope is supported so that it can be sent by pillars such as steel towers installed at key points in the middle section,
In this system, a rotational driving force is applied to at least one of the wire rope driving pulleys to rotate the pulley, and the wire rope is sent to move a lift or a gondola in which the wire rope is suspended.

By the way, as a wire rope driving device in this kind of cableway system, a new one driven by using a linear electromagnetic actuator has been proposed.

This configuration is shown in FIG. 1 and FIG. In the figure, reference numeral 1 denotes a wire rope driving pulley. The wire rope driving pulley 1 is rotatably supported by a rotation support shaft 2. The wire rope 5 is tensioned and wound around the wire rope driving pulley 1. In order to eliminate metal fatigue of the wire rope 5, the wire rope driving pulley 1 has a large diameter of about 4000 mm.

A secondary reaction plate 6 made of a non-magnetic good conductor such as aluminum or copper is attached to the peripheral surface of the pulley 1 for driving a wire rope by welding or bolting. Further, a plurality of linear electromagnetic actuators 7 are arranged so as to face the reaction plate 6 while maintaining a certain gap, and this linear electromagnetic actuator 7 is a support mechanism (not shown) different from the pulley 1 for driving the wire rope. Is fixedly supported. When the linear electromagnetic actuator 7 is excited by three-phase alternating current, a moving magnetic field is generated in the linear electromagnetic actuator 7, and the moving magnetic field generates an eddy current in the reaction plate 6, which is a secondary-side conductor. The interaction between the magnetic field and the eddy current generates a propulsive force on the reaction plate 6, and the pulley 1 for driving the wire rope rotates. Reference numeral 9 denotes a control disk brake.

(Problems to be Solved by the Invention) By the way, when the pulley 1 for driving a wire rope is driven, the temperature of the reaction plate 6 rises due to the eddy current, and this temperature reaches about 200 ° C.

On the other hand, the temperature of the wire rope driving pulley 1 hardly rises due to its large volume and good cooling. Therefore, the reaction plate 6 thermally expands,
A large relative displacement is generated between the pulley 1 for driving the wire rope and a large stress acts on a fixed portion (bolt or the like) of the reaction plate 6, thereby deforming or breaking the bolt or breaking the welded portion. On the other hand, if the temperature rise of the reaction plate 6 is limited, there is a problem that the driving force cannot be increased too much.

Accordingly, an object of the present invention is to solve the above-described problems of the conventional technology, to escape the thermal expansion of the reaction plate, to increase the temperature of the reaction plate greatly, and to improve the performance of the drive device. A driving device for the vehicle.

[Configuration of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a pulley for driving a wire rope at a start point and an end point of a transfer section, respectively.
Along with extending an endless wire rope between the wire rope driving pulleys, and coupling the secondary side conductor portion made of a non-magnetic good conductor to the peripheral side surface of the wire rope driving pulley,
And a linear electromagnetic actuator is disposed opposite to and separated from the secondary-side conductor portion, and the linear electromagnetic actuator is excited to induce an eddy current in the secondary-side conductor portion to generate a moving magnetic field to generate a wire rope drive pulley. In a cableway driving device adapted to apply a rotational torque, a plurality of elliptical mounting holes which are long in the radial direction are formed in the secondary-side conductor, and this secondary-side conductor is used as a wire rope driving pulley. On the other hand, it is characterized by being connected via a plurality of mounting bolts so as to be able to expand and contract in the radial direction.

(Operation) According to the present invention, since the secondary-side conductor portion is connected to the wire rope driving pulley via the mounting bolt so as to be able to expand and contract in the radial direction, the force due to the difference in thermal expansion between the two is provided. Does not exert excessive force on the mounting bolts that connect the two. Also, if an excessive force is generated, if the mounting bolt is bent, an excessive force can be allowed in the same manner as described above.

Hereinafter, an embodiment of a cableway driving device according to the present invention will be described with reference to the drawings.

In FIG. 2, B is a foundation, 1 is a pulley for driving a wire rope, and the pulley 1 for driving a wire rope is arranged in a state of lying down so that the wheel faces the ground,
The rotation support shaft 2 is rotatably mounted on the upper end of the rotation support shaft 2 in the standing state. The rotation support shaft 2 is a foundation B
It is a shaft installed above and extending upward. The wire rope 5 is stretched and wound around the wire rope driving pulley 1. In consideration of reducing the metal fatigue of the wire rope 5, the wire rope driving pulley 1 has a large diameter of about 4000 mm. I have. Also, the tension of the wire rope 5
Some are larger than 30 tons and are generally large, so that the rotary support shaft 2 has sufficient strength and is firmly fixed.

A secondary side reaction plate 6 made of a nonmagnetic good conductor such as aluminum or copper is firmly joined to the peripheral side surface of the wire rope driving pulley 1 in a ring shape over the entire periphery.

Linear electromagnetic actuators 7 are arranged at equal intervals in the circumferential direction so as to face the secondary side reaction plate 6, and the linear electromagnetic actuators 7 are separated from the pulley 1 for driving the wire rope and are held separately (not shown). It is fixedly arranged by the mechanism.

Thus, according to the present invention, the reaction plate 6
In order to eliminate the inconvenience caused by the difference in thermal expansion between the wire pulley 1 and the pulley 1 for driving the wire rope, as shown in FIG.
1, 6 are connected via a plurality of mounting bolts 10, 10,...

4 to 7 show one embodiment of the present invention, wherein the mounting hole 11 formed in the reaction plate 6 is
As shown in FIG. 7, the hole is a long elliptical hole in the radial direction, the radial gap c between the bolt 10 and the reaction plate 6 is large, and the rotational gap b is extremely small.

In such a configuration, when the temperature of the reaction plate 6 rises due to operation and thermal expansion occurs, the fourth
As shown by a two-dot chain line in the figure, the bolt is displaced in the direction in which the diameter increases, but if the gap c in the radial direction of the mounting hole 11 is configured to be larger than the movement a due to thermal expansion (FIG. 6),
The displacement of the reaction plate 6 can be allowed without exerting an excessive stress on 10. Further, the driving force in the rotating direction can be transmitted without increasing the stress of the bolt as in the conventional case.

8 to 10 show another embodiment, in which the wire rope driving pulley 1 is provided with a step 13 extending in the circumferential direction.
The inner periphery of the reaction plate 6 is engaged to keep the position of the reaction plate 6 concentric, and the mounting holes for the bolts 10 formed in the wire rope drive pulley 1 are escape holes 12 except for the screw portion 12a. . The relief hole 12 is formed in an elliptical shape which is large in the radial direction of the driving pulley 1. As is clear from FIG. 9, the clearance a in the radial direction with respect to the bolt 10 is large, and the clearance in the rotation direction of the driving pulley 1 is large. b is configured to be extremely small.

Here, the temperature of the reaction plate 6 increases with the operation, the diameter thereof increases due to thermal expansion, and the reaction plate 6 moves to the position indicated by the two-dot chain line in FIG. At this time, the bolt 10 bends with the movement of the reaction plate 6, and becomes as shown by a two-dot chain line. As shown in FIG. 9, an escape hole 12 is provided in the radial direction of the bolt 10 so that the gap a in the radial direction is configured to be large.
The deflection of the bolt 10 is not restricted, and no large stress is applied to the bolt 10.

Also, the gap in the rotation direction is extremely small,
Even if the rotational driving force is transmitted, the difference in thermal expansion is absorbed and the bolt 10
No large stress is generated.

When the operation and stop are repeated, the reaction plate 6 repeats expansion due to temperature rise and contraction due to cooling (return to normal state).
Is provided, the inner peripheral portion of the reaction plate 6 is guided by the step portion 13 and is always centered at a position concentric with the wire rope driving pulley 1.

11 to 13 show another embodiment, in which a through hole 15 formed in the pulley 1 for driving a wire rope has an elliptical shape long in the radial direction. The size of the gap between the through hole 15 and the stud bolt 16 is such that the rotation direction gap a is small,
The radial gap b is large.

In the wire rope driving device of the present embodiment configured as described above, when the temperature of the reaction plate 6 rises by operation, the reaction plate 6 thermally expands and moves to the position indicated by the two-dot chain line as shown in FIG. In this case, the stud bolts 16 fastening the reaction plates on both sides also move together with the reaction plate 6.

When the amount of movement in the radial direction due to the thermal expansion of the reaction plate 6 is represented by c, the radial gap b shown in FIG.
Is larger than the movement amount c, no large stress is generated on the stud bolt 16 even when the reaction plate 6 thermally expands, and the stud bolt 16 is not deformed or broken.

On the other hand, even if the reaction plate 6 thermally expands, the rotational gap a (FIG. 12) remains constant without change, so that the driving rotational force is transmitted without hindrance, and no large stress is generated on the stud bolt 16. .

Further, even when the reaction plate 6 repeats thermal expansion and contraction due to cooling caused by temperature rise, the step 13 formed on the wire rope driving pulley 1 and the inner periphery of the reaction plate 6 serve as guides. The position of the reaction plate 6 is always centered.

14 to 16 show another embodiment,
A sliding member 18 is interposed between the reaction plate 6 and the pulley 1 for driving a wire rope, and the reaction plates 6 are fixed by studs 19 and nuts 20.

As the sliding member 18, a material having relatively low friction, such as a brass plate, and having good wear resistance is preferable, and a heat-resistant nonmetallic material may be used.

Through hole 21 of stud 19 of wire rope drive pulley 1
As shown in FIG. 15, the pulley 1 has a large elliptical shape in the radial direction of the pulley 1, the gap a in the radial direction with the stud 19 is large, and the gap b in the rotational direction is small. The wire rope driving pulley 1 is provided with a stepped portion 13, and the inner peripheral portion of the reaction plate 6 is engaged with the stepped portion 13. Also, a step is machined in the fixed portion of the reaction plate 6 of the stud 19 so that the distance between the reaction plates 6 on both sides is maintained at a constant size, and the tightening force of the nut 20 is reduced to the surface pressure of the sliding member 18. Regardless, it is configured to be constant.

In the wire rope driving device of the present embodiment thus configured, when thermal expansion occurs due to a rise in temperature, the reaction plate 6 increases in diameter as shown in FIG. Move to the position where Along with this, the stud 19 moves integrally with the reaction plate 6 to the position indicated by the two-dot chain line. Since all of the studs 19 move radially from the rotation center of the reaction plate, the through holes 21 of the pulley 1 for driving the wire rope allow the studs to move. Therefore, even if the reaction plate 6 thermally expands, no stress is generated on the studs and the like, and the reaction plate 6 does not deform or break.

Even if the reaction plate 6 thermally expands, the gap in the rotational direction between the stud 19 and the through-hole 21 of the wire rope driving pulley 1 does not change and is kept at a very small value. The transmission does not cause a large stress on the stud 19.

In addition, operation and stop are repeated, and the reaction plate 6
Even when the airbag repeatedly expands and contracts due to cooling due to the temperature rise, the step 13 provided on the wire rope driving pulley 1 and the inner periphery of the reaction plate 1 serve as a guide, and the reaction plate 6 is always connected to the wire rope. It returns to the concentric position with the drive pulley 1.

Further, the movement of the reaction plate 6 during thermal expansion or contraction is absorbed by a sliding member 18 interposed between the reaction plate 6 and the pulley 1, and is smoothly performed.

17 and 18 show another embodiment, in which a plane portion 23a is provided on the surface of the stud 23 for fixing the reaction plate 6 in the rotation direction. As a result, the rotational torque generated in the reaction plate 6 is transmitted to the wire rope driving pulley 1 over a wide area via the flat portion 23a of the stud 23, and the surface pressure between the stud 23 and the wire rope driving pulley 1 is increased. Deformation and wear can be reduced.

19 and 20 show another embodiment, in which a sliding member interposed between the reaction plate 6 and the pulley 1 is shown.
The flange 25 has a flange surface 25a, and is configured to transmit the rotational torque to the pulley 1 via the flange surface 25a of the sliding member. This also reduces the surface pressure of the transmission torque, so that deformation and wear of this portion can be reduced.

〔The invention's effect〕

As is apparent from the above description, according to the present invention, the relief is provided in the radial direction with respect to the mounting bolt of the reaction plate, so that even if the temperature rise of the reaction plate becomes large, an excessive force acts on the fixing bolt. Instead, the temperature rise of the reaction plate can be designed to be large, and the performance of the drive device can be improved or the size and weight can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a cableway driving device according to the present invention, FIG. 2 is a side view thereof, FIG. 3 is a plan view showing connection of a reaction plate and a pulley, and FIG. , FIG. 5 is a sectional view of the same, FIGS. 6 and 7 are explanatory views for explaining the same operation, FIG. 8 is a sectional view of another embodiment of the present invention, and FIG. And FIG. 10 is an explanatory view for explaining the operation, FIG. 11 is a cross-sectional view showing another embodiment of the present invention, FIGS. 12 and 13 are explanatory views for explaining the operation, 14 is a cross-sectional view showing another embodiment of the present invention, FIGS. 15 and 16 are explanatory views for explaining the same operation, and FIG. 17 is a cross-sectional view showing another embodiment of the present invention. 18 is an explanatory view for explaining the operation, FIG. 19 is a plan view showing another embodiment of the present invention, and FIG. 20 is a sectional view of the same. 1 ... pulley for driving a wire rope, 2 ... rotation support shaft, 6
… Reaction plate, 7… Linear electromagnetic actuator, 10,16,19,23 …… Mounting bolts, 11,12,15,21 ……
Mounting holes, 18,25 ... Sliding material.

Claims (4)

(57) [Claims] 1. A wire rope driving pulley is provided at each of a starting point and an end point of a transfer section, and an endless wire rope is wound between these wire rope driving pulleys, and a peripheral side surface of the wire rope driving pulley is provided. The secondary side conductor portion made of a non-magnetic good conductor is engaged with, and a linear electromagnetic actuator is disposed opposite to and separated from the secondary side conductor portion, and the linear electromagnetic actuator is excited to be connected to the secondary side conductor portion. In a cableway driving device in which an eddy current is induced to generate a moving magnetic field to apply a rotational torque to a pulley for driving a wire rope; a plurality of elliptical mounting holes which are long in the radial direction are drilled in the secondary conductor. A cableway driving device, wherein the secondary-side conductor portion is connected to a wire rope driving pulley via a plurality of mounting bolts so as to be able to expand and contract in the radial direction. 2. A mounting hole comprising a screw portion for screwing the mounting bolt to the wire rope driving pulley and a relief hole for allowing the mounting bolt screwed to the screw portion to bend. The cableway driving device according to claim 1, wherein the secondary-side conductor portion is connected to a rope driving pulley via the mounting bolt. 3. A wire rope driving pulley having a plurality of elliptical mounting holes which are long in the radial direction, and the wire-side driving pulley is provided with a stud. 2. The cableway drive device according to claim 1, wherein the cable drive device is integrally connected via a bolt. 4. The cableway driving device according to claim 1, wherein a sliding member is interposed between the secondary-side conductor and the wire rope driving pulley.